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Kirill Smelkov
cpython
Commits
42b30eef
Commit
42b30eef
authored
Sep 10, 2016
by
Benjamin Peterson
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Doc/howto/instrumentation.rst
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42b30eef
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@@ -280,23 +280,22 @@ Available static markers
The filename, function name, and line number are provided back to the
tracing script as positional arguments, which must be accessed using
`
$arg1`, `$arg2`, `$arg3
`:
`
`$arg1``, ``$arg2``, ``$arg3`
`:
* `
$arg1` : `(const char *)` filename, accessible using `user_string($arg1)
`
* `
`$arg1`` : ``(const char *)`` filename, accessible using ``user_string($arg1)`
`
* `
$arg2` : `(const char *)
` function name, accessible using
`
user_string($arg2)
`
* `
`$arg2`` : ``(const char *)`
` function name, accessible using
`
`user_string($arg2)`
`
* `
$arg3` : `int
` line number
* `
`$arg3`` : ``int`
` line number
.. c:function:: function__return(str filename, str funcname, int lineno)
This marker is the converse of `function__entry`, and indicates that
execution of a Python function has ended (either via ``return``, or
via an exception). It is only triggered for pure-Python (bytecode)
functions.
This marker is the converse of :c:func:`function__entry`, and indicates that
execution of a Python function has ended (either via ``return``, or via an
exception). It is only triggered for pure-Python (bytecode) functions.
The arguments are the same as for `function__entry`
The arguments are the same as for
:c:func:
`function__entry`
.. c:function:: line(str filename, str funcname, int lineno)
...
...
@@ -304,17 +303,17 @@ Available static markers
the equivalent of line-by-line tracing with a Python profiler. It is
not triggered within C functions.
The arguments are the same as for `function__entry`.
The arguments are the same as for
:c:func:
`function__entry`.
.. c:function:: gc__start(int generation)
Fires when the Python interpreter starts a garbage collection cycle.
`
arg0
` is the generation to scan, like :func:`gc.collect()`.
`
`arg0`
` is the generation to scan, like :func:`gc.collect()`.
.. c:function:: gc__done(long collected)
Fires when the Python interpreter finishes a garbage collection
cycle. `
arg0
` is the number of collected objects.
cycle. `
`arg0`
` is the number of collected objects.
SystemTap Tapsets
...
...
@@ -348,7 +347,7 @@ Here is a tapset file, based on a non-shared build of CPython:
}
If this file is installed in SystemTap's tapset directory (e.g.
`
/usr/share/systemtap/tapset
`), then these additional probepoints become
`
`/usr/share/systemtap/tapset`
`), then these additional probepoints become
available:
.. c:function:: python.function.entry(str filename, str funcname, int lineno, frameptr)
...
...
@@ -358,9 +357,10 @@ available:
.. c:function:: python.function.return(str filename, str funcname, int lineno, frameptr)
This probe point is the converse of `python.function.return`, and indicates
that execution of a Python function has ended (either via ``return``, or
via an exception). It is only triggered for pure-python (bytecode) functions.
This probe point is the converse of :c:func:`python.function.return`, and
indicates that execution of a Python function has ended (either via
``return``, or via an exception). It is only triggered for pure-python
(bytecode) functions.
Examples
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